Espresso machine



FIG. 1 is a top, front and right side perspective view of my new espresso machine;

FIG. 2 is a front elevation;

FIG. 3 is a rear elevation;

FIG. 4 is a right side elevation;

FIG. 5 is a left side elevation;

FIG. 6 is a top plan view; and,

FIG. 7 is a bottom plan view. 

The ornamental design for an espresso machine, as shown and described. 